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CEN

EN 12952-3:2001

(Main)

Water-tube boilers and auxilliary installations - Part 3: Design and calculation for pressure parts

Water-tube boilers and auxilliary installations - Part 3: Design and calculation for pressure parts

This Part of this European Standard specifies the requirements for the design and calculation of water-tube boilers
as defined in EN 12952-1.

Wasserrohrkessel und Anlagenkomponenten - Teil 3: Konstruktion und Berechnung für drucktragende Teile

Dieser Teil der Europäischen Norm legt Anforderungen für die Konstruktion und Berechnung von Wasserrohrkesseln nach der Definition in EN 12952-1 fest.

Chaudières à tubes d'eau et installations auxiliaires - Partie 3: Conception et calcul des parties sous pression

Cette partie de la Norme européenne spécifie les règles de conception et de calcul des chaudières à tubes d'eau telles que définies dans l'EN 12952-1.

Vodocevni kotli in pomožne napeljave - 3. del: Konstrukcija in izračun delov, ki so pod tlakom

General Information

Status
Withdrawn
Publication Date
11-Dec-2001
Withdrawal Date
20-Dec-2011
ICS
27.040 - Gas and steam turbines. Steam engines
Technical Committee
CEN/TC 269 - Shell and water tube boilers
Drafting Committee
CEN/TC 269/WG 1 - Water-tube boilers
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
21-Dec-2011
Completion Date
21-Dec-2011
Directive
97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
Mandate
M/071 - Mandate to CEN for standardization in the field of Pressure equipment
Ref Project
SIST EN 12952-3:2002 - Water-tube boilers and auxilliary installations - Part 3: Design and calculation for pressure parts

Relations

Replaced By
EN 12952-3:2011 - Water-tube boilers and auxiliary installations - Part 3: Design and calculation for pressure parts of the boiler
Effective Date
28-Dec-2011

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Wasserrohrkessel und Anlagenkomponenten - Teil 3: Konstruktion und Berechnung für drucktragende TeileChaudieres a tubes d'eau et installations auxiliaires - Partie 3: Conception et calcul des parties sous pressionWater-tube boilers and auxilliary installations - Part 3: Design and calculation for pressure parts27.060.30Grelniki vode in prenosniki toploteBoilers and heat exchangersICS:Ta slovenski standard je istoveten z:EN 12952-3:2001SIST EN 12952-3:2002en01-maj-2002SIST EN 12952-3:2002SLOVENSKI
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SIST EN 12952-3:2002



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12952-3December 2001ICS 27.040English versionWater-tube boilers and auxilliary installations - Part 3: Designand calculation for pressure partsChaudières à tubes d'eau et installations auxiliaires - Partie3: Conception et calcul des parties sous pressionWasserrohrkessel und Anlagenkomponenten - Teil 3:Konstruktion und Berechnung für drucktragende TeileThis European Standard was approved by CEN on 25 July 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12952-3:2001 ESIST EN 12952-3:2002



EN 12952-3:2001 (E)ContentsPagePageForeword .1Scope .2Normative references .3Terms and definitions .4Symbols and abbreviations .5General .5.1Purpose .5.2Dimensions of pressure parts .5.3Strength of pressure parts .
5.4Design by analysis.
5.5Cyclic loading .5.6General design requirements .5.7Design and calculation pressures .5.8Metal wastage .5.9Attachments on pressure parts .6Calculation temperature and nominal design stress .6.1Calculation temperature . 6.2Maximum through-the-wall temperaturedifference and maximum flue gastemperature for heated drums and headers .6.3Design stress .7Cylindrical shells of drums and headersunder internal pressure.7.1Shell thickness .7.2Basic calculation .7.3Combined stresses in drum and header shells .7.4Boiler drum supports.7.5Other stresses in cylindrical shells .8Openings and branches in cylindrical shells of drums and headers and integral tubes .8.1General .8.2Efficiency factor, calculation by way ofapproximation, and maximum diameter of unreinforced openings .8.3Design of openings and branches in cylindrical shells (efficiency and reinforcement) .8.4Bolted connections .8.5Screwed connections .9Headers and plain tubes of rectangular section .9.1General .9.2Symbols and abbreviations.9.3Required wall thickness.10Ends and spherical shells .10.1Symbols and abbreviations.10.2Spherical shells and dished ends .10.3Unstayed flat ends .10.4Flat unstayed closures .11Tubes .11.1Symbols and abbreviations .11.2Thickness of straight boiler tubes .11.3Thickness of tube bends and elbows .11.4Flexibility of integral tubing tube systems 11.5Structural attachments to tubes .11.6Fitting and joining of heated tubes .11.7Joining of unheated tubes .12Pressure parts of irregular shape .12.1Hydrostatic test for determining the allowable internal pressure .12.2Numerical methods .13Fatigue .13.1General .13.2Symbols and abbreviations .13.3Exemption rule for fatigue analysis .13.4Stress analysis for fatigue calculation .13.5Examp
...

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